WRT54g doesn't link with Comcast cable

I tried for 3hrs, unsuccesfully yesterday to switch from a plain old linksys etherfast wired router to this new WRT54G. For some reason it just never linked the internet through. I even tried linksys' tech support and got nothing. The host computer is using windows 2k. Any ideas ppl?

Well usually it just requires you to unplug the router and cable modem. Plug in the router first, then plug in the cable modem. You might try to clone the MAC address of your old router and see if that works.

Perhaps given the very limited information you originally posted, ...yes.

I apologize for appearing blunt, but you didn't mention what specific steps you took to resolve your problem; like cloning your MAC address, rebooting, etc. Had this been stated, I'm sure it would have been taken into account.

Second, you didn't indicate which version of WRT54G you bought. All we know is that you have cable internet, but what make/model of modem? Some of the new DOCSIS modems are becoming very particular about what or who connects up to them. We would also have to assume that you haven't updated or re-flashed the factory firmware in any way, as this would prompt an appropriately different response entirely.

I hope you can appreciate those that want to help, are truly grasping at straws. Please don't jump on someone for trying to help. We are just a users, trying to help other users, and share our experience.

I don't know if this will help in your quest but several of the CM's that CCAST uses will cache the MAC addy of the device behind it. If you've performed all the steps that the previous members have suggested then I would look for a reset button on your CM and hold it down for 30 sec's. This will typically clear the cache out.

so after a flury of thunderstorms and the such recently, ccast has issues and router resets, in addition it is not at the default 192.168.1.1, i upgraded to pre4 just before. Does anyone know if the default ip of the router changes to something other than the number aforementioned when reset?

I have COMCAST w/RCA Modem and WRT54G v3.0 updated to official firmware v4 now (Internet always worked since I got router). DO SETUP WITHOUT MODEM CONNECTED FIRST...Router Setup is...use Ethernet connection to PC to setup... ANY SETTINGS NOT LISTED ARE NOT NECESSARY or BLANK! SAVE SETTINGS AFTER EACH SETTING PAGE CHANGE... BASIC SETUP: Automatic config - DHCP, no host, no domain, Auto MTU, whatever you want as local IP for ROUTER(not comcast's IP, they set that), DDNS: DDNS disable, MAC Address Clone: Enable Mac Address Clone, Advanced Routing: GATEWAY with no extra settings, forget wireless till you get this working, Security Firewall: all enabled except Internet NAT redirect, VPN: all enabled, Acces Restriction: Disabled, App and Gaming: all disable or no setting, Administration: HTTP checked, Remote Management disabled, UPnP Enabled...SAVE and exit ... then UNPLUG both Modem and Router, reconnect modem first and wait till Cable Link and Internet lights are steady and the other two should be blinking, then reconnect Router afterward and it should have blinking Internet light. IF THESE LIGHTS SHOW THEN ROUTER READS MODEM and INTERNET. GO BACK and CHECK ROUTER SETTINGS and view STATUS PAGE, Mac Address should be filled out, WRT54G router name, NO HOST, Domain Name should have something with "comcast.net" or similar, Login Type: automatic - DHCP, IP address and Subnet should be filled out also and I think the rest should also be filled out.... If YOUR PC can't connect to Internet it usually a PC setting(maybe Windows firewall or other LAN setting, that's another story) ALL LAN SETTINGS FOR WINDOWS ARE SET TO AUTOMATIC AND SHOULD HAVE DHCP ENABLED!!